Home / 15,459.04-21,333.54-8,386.12

Finding the Fourth Proportional to 15,459.04, 21,333.54 and 8,386.12

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Solution

The fourth proportional to 15,459.04, 21,333.54 and 8,386.12 is: 11,572.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,459.04 : 21,333.54 = 8,386.12 : x
  2. Step 2: Convert to fraction form
    15,459.04/21,333.54 = 8,386.12/x
  3. Step 3: Cross multiply
    15,459.04x = 21,333.54 × 8,386.12
  4. Step 4: Simplify right side
    15,459.04x = 178,905,626.46
  5. Step 5: Solve for x
    x = 178,905,626.46/15,459.04
  6. Step 6: Final answer
    x = 11,572.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.